+1. For all aboveground and underground components, excluding distribution and transmission networks …
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1. For all aboveground and underground components, excluding distribution and transmission networks …
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1.
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For all aboveground and underground components, excluding distribution and transmission networks LDAR surveys shall be carried out at the following minimum frequency:
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Type of LDAR survey
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Type of component
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Frequency
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Type 1 LDAR survey
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Compressor station
Underground storage
LNG facility
Regulating and metering station
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4 months
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Valve station
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9 months
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Type 2 LDAR survey
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Compressor station
Underground storage
LNG facility
Regulating and metering station
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8 months
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Valve station
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18 months
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Type of LDAR survey
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Type of material
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Frequency
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Type 1 LDAR survey
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Bitumen sheet
Grey cast iron
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3 months
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Asbestos
Ductile cast iron
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6 months
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Non-protected steel
Copper
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9 months
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Polyethylene
PVC
Protected steel
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15 months
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Type 2 LDAR survey
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Bitumen sheet
Grey cast iron
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6 months
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Asbestos
Ductile cast iron
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12 months
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Non-protected steel
Polyethylene
PVC
Copper
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18 months
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Protected steel
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30 months
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Where the type of material cannot be determined, the highest frequency for the respective type of LDAR survey shall be used.
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1. Pārskats
1.1 Atsauces
1.2 Identificētās prasības
1.3 Saistītie standarti
2. Identificētās prasības
3. Saistītie standarti
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